1 #include <lwk/kernel.h>
3 #include <lwk/kallsyms.h>
8 #include <arch/idt_vectors.h>
10 #include <arch/xcall.h>
11 #include <arch/i387.h>
13 typedef void (*idtvec_handler_t)(struct pt_regs *regs, unsigned int vector);
15 idtvec_handler_t idtvec_table[NUM_IDT_ENTRIES];
17 extern void asm_idtvec_table(void);
20 do_unhandled_idt_vector(struct pt_regs *regs, unsigned int vector)
22 if ((vector >= IRQ0_VECTOR) && (vector <= IRQ15_VECTOR)) {
24 "Unhandled Interrupt! (vector=%u, isa_irq=%u)\n",
25 vector, vector - IRQ0_VECTOR);
28 "Unhandled Interrupt! (vector=%u)\n", vector);
33 do_divide_error(struct pt_regs *regs, unsigned int vector)
35 printk("Divide Error Exception\n");
41 do_nmi(struct pt_regs *regs, unsigned int vector)
43 printk("NMI Exception\n");
49 do_int3(struct pt_regs *regs, unsigned int vector)
51 printk("INT3 Exception\n");
57 do_overflow(struct pt_regs *regs, unsigned int vector)
59 printk("Overflow Exception\n");
65 do_bounds(struct pt_regs *regs, unsigned int vector)
67 printk("Bounds Exception\n");
73 do_invalid_op(struct pt_regs *regs, unsigned int vector)
75 printk("Invalid Op Exception\n");
81 do_device_not_available(struct pt_regs *regs, unsigned int vector)
83 BUG_ON(current->arch.flags & TF_USED_FPU);
84 current->arch.flags |= TF_USED_FPU;
86 fpu_restore_state(current);
90 do_double_fault(struct pt_regs *regs, unsigned int vector)
92 printk("Double Fault Exception\n");
98 do_coproc_segment_overrun(struct pt_regs *regs, unsigned int vector)
100 printk("Coprocessor Segment Exception\n");
101 show_registers(regs);
106 do_invalid_tss(struct pt_regs *regs, unsigned int vector)
108 printk("Invalid TSS Exception)\n");
109 show_registers(regs);
114 do_segment_not_present(struct pt_regs *regs, unsigned int vector)
116 printk("Segment Not Present Exception\n");
117 show_registers(regs);
122 do_stack_segment(struct pt_regs *regs, unsigned int vector)
124 printk("Stack Segment Exception\n");
125 show_registers(regs);
130 do_general_protection(struct pt_regs *regs, unsigned int vector)
132 printk("General Protection Exception\n");
133 show_registers(regs);
138 do_page_fault(struct pt_regs *regs, unsigned int vector)
140 printk("Page Fault Exception\n");
141 show_registers(regs);
146 do_spurious_interrupt_bug(struct pt_regs *regs, unsigned int vector)
148 printk("Spurious Interrupt Exception\n");
149 show_registers(regs);
154 do_coprocessor_error(struct pt_regs *regs, unsigned int vector)
156 printk("Coprocessor Error Exception\n");
157 show_registers(regs);
162 do_alignment_check(struct pt_regs *regs, unsigned int vector)
164 printk("Alignment Check Exception\n");
165 show_registers(regs);
170 do_machine_check(struct pt_regs *regs, unsigned int vector)
172 printk("Machine Check Exception\n");
173 show_registers(regs);
178 do_simd_coprocessor_error(struct pt_regs *regs, unsigned int vector)
180 printk("SIMD Coprocessor Error Exception\n");
181 show_registers(regs);
186 do_apic_timer(struct pt_regs *regs, unsigned int vector)
192 do_apic_perf_counter(struct pt_regs *regs, unsigned int vector)
194 printk("APIC Perf. Counter Interrupt, vector=%u\n", vector);
195 show_registers(regs);
200 do_apic_thermal(struct pt_regs *regs, unsigned int vector)
202 printk("APIC Thermal Interrupt, vector=%u\n", vector);
203 show_registers(regs);
208 do_apic_error(struct pt_regs *regs, unsigned int vector)
210 printk("APIC Error Interrupt, vector=%u\n", vector);
211 show_registers(regs);
216 do_apic_spurious(struct pt_regs *regs, unsigned int vector)
218 printk("APIC Spurious Interrupt, vector=%u\n", vector);
219 show_registers(regs);
224 set_idtvec_handler(unsigned int vector, idtvec_handler_t handler)
226 char namebuf[KSYM_NAME_LEN+1];
227 unsigned long symsize, offset;
229 ASSERT(vector < NUM_IDT_ENTRIES);
231 if (handler != &do_unhandled_idt_vector) {
232 printk(KERN_DEBUG "IDT Vector %3u -> %s()\n",
233 vector, kallsyms_lookup( (unsigned long)handler,
234 &symsize, &offset, namebuf )
238 idtvec_table[vector] = handler;
242 do_interrupt(struct pt_regs *regs, unsigned int vector)
244 idtvec_table[vector](regs, vector);
245 if (vector >= FIRST_EXTERNAL_VECTOR)
246 lapic_ack_interrupt();
250 interrupts_init(void)
255 * Initialize the Interrupt Descriptor Table (IDT).
257 for (vector = 0; vector < NUM_IDT_ENTRIES; vector++) {
258 void *asm_handler = (void *) (
259 (unsigned long)(&asm_idtvec_table) + (vector * 16)
261 set_intr_gate(vector, asm_handler);
262 set_idtvec_handler(vector, &do_unhandled_idt_vector);
266 * Register handlers for the standard x86_64 interrupts & exceptions.
268 set_idtvec_handler( DIVIDE_ERROR_VECTOR, &do_divide_error );
269 set_idtvec_handler( NMI_VECTOR, &do_nmi );
270 set_idtvec_handler( INT3_VECTOR, &do_int3 );
271 set_idtvec_handler( OVERFLOW_VECTOR, &do_overflow );
272 set_idtvec_handler( BOUNDS_VECTOR, &do_bounds );
273 set_idtvec_handler( INVALID_OP_VECTOR, &do_invalid_op );
274 set_idtvec_handler( DEVICE_NOT_AVAILABLE_VECTOR, &do_device_not_available );
275 set_idtvec_handler( DOUBLE_FAULT_VECTOR, &do_double_fault );
276 set_idtvec_handler( COPROC_SEGMENT_OVERRUN_VECTOR, &do_coproc_segment_overrun );
277 set_idtvec_handler( INVALID_TSS_VECTOR, &do_invalid_tss );
278 set_idtvec_handler( SEGMENT_NOT_PRESENT_VECTOR, &do_segment_not_present );
279 set_idtvec_handler( STACK_SEGMENT_VECTOR, &do_stack_segment );
280 set_idtvec_handler( GENERAL_PROTECTION_VECTOR, &do_general_protection );
281 set_idtvec_handler( PAGE_FAULT_VECTOR, &do_page_fault );
282 set_idtvec_handler( SPURIOUS_INTERRUPT_BUG_VECTOR, &do_spurious_interrupt_bug );
283 set_idtvec_handler( COPROCESSOR_ERROR_VECTOR, &do_coprocessor_error );
284 set_idtvec_handler( ALIGNMENT_CHECK_VECTOR, &do_alignment_check );
285 set_idtvec_handler( MACHINE_CHECK_VECTOR, &do_machine_check );
286 set_idtvec_handler( SIMD_COPROCESSOR_ERROR_VECTOR, &do_simd_coprocessor_error );
289 * Register handlers for all of the local APIC vectors.
291 set_idtvec_handler( APIC_TIMER_VECTOR, &do_apic_timer );
292 set_idtvec_handler( APIC_PERF_COUNTER_VECTOR, &do_apic_perf_counter );
293 set_idtvec_handler( APIC_THERMAL_VECTOR, &do_apic_thermal );
294 set_idtvec_handler( APIC_ERROR_VECTOR, &do_apic_error );
295 set_idtvec_handler( APIC_SPURIOUS_VECTOR, &do_apic_spurious );
298 * Register handlers for inter-CPU interrupts (cross calls).
300 set_idtvec_handler( XCALL_FUNCTION_VECTOR, &arch_xcall_function_interrupt );
301 set_idtvec_handler( XCALL_RESCHEDULE_VECTOR, &arch_xcall_reschedule_interrupt );